<template>
  <div class="tab_class">
    <div class="tal_class_searchBox">
      <van-search placeholder="点击前往搜索"/>
      <div class="tal_class_searchMask" @click="$router.push({ name: 'search' })"></div>
    </div>

    <div class="class_tree clearfix">
      <ul class="class_tree_nav">
        <li
                v-for="(item, index) in categoryList"
                :key="index"
                :class="{active_nav: currentCategory.id == item.id}"
                @click="changeCatalog(item.id)"
        >{{item.name}}
        </li>
      </ul>
      <div class="class_tree_content">
        <div class="class_tree_all">
          <img style="width:250px" v-lazy="currentCategory.picUrl">
        </div>
        <div class="box">
          <span>{{currentCategory.desc}}</span>
        </div>
        <div class="class_tree_items_wrap clearfix">
          <div @click="toItemList(item.id)" :key="i" v-for="(item, i) in currentSubCategoryList">
            <div class="class_tree_item_img">
              <img :src="item.picUrl" :alt="item.name">
            </div>
            <div class="class_tree_item_name">{{item.name}}</div>
          </div>
        </div>
      </div>
    </div>

  </div>
</template>

<script>
  import {catalogCurrent, catalogList} from '@/api/api';

  import {Search} from 'vant';

  export default {
    data() {
      return {
        categoryList: [],
        currentCategory: {},
        currentSubCategoryList: []
      };
    },

    created() {
      this.initData();
    },

    methods: {
      initData() {
        catalogList().then(res => {
          let data = res.data.data;
          this.categoryList = data.categoryList;
          this.currentCategory = res.data.data.currentCategory;
          this.currentSubCategoryList = data.currentSubCategory;
        });
      },
      changeCatalog(id) {
        catalogCurrent({id: id}).then(res => {
          let data = res.data.data;
          this.currentCategory = data.currentCategory;
          this.currentSubCategoryList = data.currentSubCategory;
        });
      },
      toItemList(id) {
        this.$router.push({
          name: 'category',
          query: {keyword: '', itemClass: id}
        });
      }
    },
    components: {
      [Search.name]: Search
    }
  };
</script>


<style lang="scss" scoped>
  @import '../../assets/scss/mixin';

  .tab_class {
    overflow: hidden;
    background-color: #fff;
  }

  .height-fix {
    padding-bottom: 42px;
  }

  .tal_class_searchBox {
    position: relative;
  }

  .tal_class_searchMask {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9;
  }


  .box {
    width: 250px;
    height: 20px;
    text-align: center;
    font-family: PingFangSC-Light, helvetica, 'Heiti SC';
    font-size: 13px;
    position: absolute;
    top: 95px;
  }

  .box span {
    line-height: 20px;
  }

  .class_tree {
    position: relative;
    background-color: #fff;
    overflow-x: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    overflow: hidden;
    height: 100%;
    box-sizing: border-box;
  }

  .class_tree_nav {
    float: left;
    width: 100px;
    height: 100%;
    background-color: #fff;
    overflow: scroll;

    > li {
      @include one-border;
      height: 40px;
      line-height: 40px;
      text-align: center;
      border-left: 2px solid $bg-color;
    }

    > li.active_nav {
      background-color: #fff;
      border-left: 2px solid $red;
      color: $red;
    }
  }

  .class_tree_content {
    margin-left: 100px;
    height: 100%;
    overflow-x: hidden;
    overflow-y: scroll;

    .class_tree_all {
      text-align: right;
      padding-right: 10px;
      height: 40px;
      line-height: 40px;
      color: $font-color-gray;
      font-size: $font-size-small;
    }

    .van-icon-arrow {
      font-size: $font-size-small;
    }

    .class_tree_items_wrap {
      padding: 10px 20px;
      margin-right: -3%;
      margin-top: 70px;
      text-align: center;

      > div {
        float: left;
        padding-right: 3%;
        box-sizing: border-box;
        width: 33.333%;
        margin-bottom: 20px;
      }

      img {
        max-width: 100%;
      }

      .class_tree_item_img {
        display: inline-block;
        max-width: 100%;
        width: 70px;
        height: 70px;
      }

      .class_tree_item_name {
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
      }
    }
  }
</style>
